One of the last 3.3 formal releases. The 3.3 branch is very old now and is not being improved except for major security and dataloss fixes. The core Moodle team will keep working on them until November 2018. See Releases for more info.

One of the last 3.1 formal releases. The 3.1 branch is very old now and is not being improved except for major security and dataloss fixes. The core Moodle team will keep working on them until May 2019. See Releases for more info.